package com.itheima.reggie.service.impl;/**
 * 功能描述
 *
 * @author 唯硕
 * @date 2022/09/23  20:44
 */

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrdersMapper;
import com.itheima.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 *@ClassName OrdersServiceImpl
 *@Description TODO 用户订单
 *@Author 唯硕
 *@Date 2022/9/23 20:44
 *@Version 1.0
 */
@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {
    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrderDetailService orderDetailService;

    @Transactional
    public void submit(Orders orders) {
        //获取当前用户Id
        Long userId = BaseContext.getCurrentId();
        //查询购物车获取用户订单信息
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCartList = shoppingCartService.list(queryWrapper);
        if(shoppingCartList==null||shoppingCartList.size()==0){
            throw new CustomException("购物车不能为空，不能下单");
        }


        //查询用户数据
        User user = userService.getById(userId);
        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if(addressBook ==null){
            throw new CustomException("购物车不能为空，不能下单");
        }

        long orderId = IdWorker.getId();  //订单号
        AtomicInteger amount = new AtomicInteger(0);
        List<OrderDetail>  orderDetailList = shoppingCartList.stream().map((item)->{
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());

            return orderDetail;

        }).collect(Collectors.toList());

        orders.setNumber(String.valueOf(orderId));
        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());//支付时间
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));
        orders.setUserId(userId);
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName()==null?"":addressBook.getProvinceName())
                +(addressBook.getCityName()==null?"":addressBook.getCityName())
                +(addressBook.getDistrictName()==null?"":addressBook.getDistrictName())
                +(addressBook.getDetail()==null?"":addressBook.getDetail()));
        //像订单表(order)插入数据，一条数据
        this.save(orders);
        //像订单表插入数据，多条数据
        orderDetailService.saveBatch(orderDetailList);

        //清空购物车
        shoppingCartService.remove(queryWrapper);

    }
}
